package com.test.thread;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

/**
 * 线程池  ThreadPoolExecutor的使用：execute()
 * =============================================================
 * Version          Author          Date            Description
 * 1.0              白建         2017/11/29             创建
 * =============================================================
 */
public class Thread_0
{

    public static void main(String[] args)
    {

        ThreadPoolExecutor executor =
                new ThreadPoolExecutor(5, 10, 200, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(5));

        for (int i = 0; i < 15; i++)
        {
            MyTask myTask = new MyTask(i);
            executor.execute(myTask);
            System.out.println("线程池中线程数目：" + executor.getPoolSize() + "，队列中等待执行的任务数目：" + executor.getQueue().size() +
                    "，已执行完别的任务数目：" + executor.getCompletedTaskCount());
        }
        executor.shutdown();
    }
}

/**
 * 线程实体
 */
class MyTask implements Runnable
{

    private int taskNum;

    public MyTask(int num)
    {

        this.taskNum = num;
    }

    @Override
    public void run()
    {

        System.out.println("正在执行task " + taskNum);
        try
        {
            Thread.currentThread().sleep(4000);
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
        System.out.println("task " + taskNum + "执行完毕");
    }
}
